diff --git a/packages/hydrooj/src/entry/common.ts b/packages/hydrooj/src/entry/common.ts
index 6eaac22c1..19af22ecc 100644
--- a/packages/hydrooj/src/entry/common.ts
+++ b/packages/hydrooj/src/entry/common.ts
@@ -7,7 +7,7 @@ import yaml from 'js-yaml';
 import { Logger } from '../logger';
 import * as bus from '../service/bus';
 
-const logger = new Logger('common', true);
+const logger = new Logger('common');
 
 export const builtinLib = [
     'jwt', 'download', 'i18n', 'mail', 'useragent',
diff --git a/packages/hydrooj/src/handler/record.ts b/packages/hydrooj/src/handler/record.ts
index c4ebea8ec..4f1ac33cd 100644
--- a/packages/hydrooj/src/handler/record.ts
+++ b/packages/hydrooj/src/handler/record.ts
@@ -2,8 +2,8 @@ import { FilterQuery, ObjectID } from 'mongodb';
 import { pick } from 'lodash';
 import { postJudge } from './judge';
 import {
-    ContestNotFoundError, PermissionError, ProblemNotFoundError,
-    RecordNotFoundError, UserNotFoundError,
+    ContestNotAttendedError, ContestNotFoundError, PermissionError,
+    ProblemNotFoundError, RecordNotFoundError, UserNotFoundError,
 } from '../error';
 import { buildProjection } from '../utils';
 import { RecordDoc } from '../interface';
@@ -41,6 +41,9 @@ class RecordListHandler extends Handler {
             tdoc = await contest.get(domainId, tid, -1);
             if (!tdoc) throw new ContestNotFoundError(domainId, pid);
             if (!contest.canShowScoreboard.call(this, tdoc, true)) throw new PermissionError(PERM.PERM_VIEW_CONTEST_HIDDEN_SCOREBOARD);
+            if (!this.user.own(tdoc) && !(await contest.getStatus(domainId, tid, this.user._id))?.attend) {
+                throw new ContestNotAttendedError(domainId, tid);
+            }
         }
         if (uidOrName) {
             const udoc = await user.getById(domainId, +uidOrName) ?? await user.getByUname(domainId, uidOrName);
@@ -59,16 +62,16 @@ class RecordListHandler extends Handler {
         }
         let cursor = record.getMulti(domainId, q).sort('_id', -1);
         if (!full) cursor = cursor.project(buildProjection(record.PROJECTION_LIST));
-        const [rdocs] = invalid ? [[]] : await paginate(cursor, page, full ? 10 : system.get('pagination.record'));
+        const [rdocs] = invalid ? [[] as RecordDoc[]] : await paginate(cursor, page, full ? 10 : system.get('pagination.record'));
         const canViewProblem = this.user.hasPerm(PERM.PERM_VIEW_PROBLEM);
-        const canViewProblemHidden = this.user.hasPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN);
+        const canViewProblemHidden = (!!tid) || this.user.hasPerm(PERM.PERM_VIEW_PROBLEM_HIDDEN);
         const [udict, pdict] = full ? [{}, {}]
             : await Promise.all([
                 user.getList(domainId, rdocs.map((rdoc) => rdoc.uid)),
                 canViewProblem
                     ? problem.getList(domainId, rdocs.map(
                         (rdoc) => (rdoc.domainId === domainId ? rdoc.pid : `${rdoc.pdomain}:${rdoc.pid}`),
-                    ), (!!tid) || canViewProblemHidden || this.user._id, false)
+                    ), canViewProblemHidden || this.user._id, false)
                     : Object.fromEntries([rdocs.map((rdoc) => [rdoc.pid, { ...problem.default, pid: rdoc.pid }])]),
             ]);
         this.response.body = {
diff --git a/packages/hydrooj/src/logger.ts b/packages/hydrooj/src/logger.ts
index 15d99d078..150786a83 100644
--- a/packages/hydrooj/src/logger.ts
+++ b/packages/hydrooj/src/logger.ts
@@ -1,5 +1,5 @@
-import { inspect, format, InspectOptions } from 'util';
-import { Time } from './utils';
+import { nanoid } from 'nanoid';
+import { format, inspect, InspectOptions } from 'util';
 
 const colors = [
     20, 21, 26, 27, 32, 33, 38, 39, 40, 41, 42, 43, 44, 45, 56, 57, 62,
@@ -20,9 +20,7 @@ export class Logger {
     static readonly WARN = 2;
     static readonly DEBUG = 3;
     static baseLevel = process.env.DEV ? 3 : 2;
-    static showDiff = false;
     static levels: Record<string, number> = {};
-    static lastTime = 0;
     private code: number;
     private displayName: string;
     public stream: NodeJS.WritableStream = process.stderr;
@@ -41,7 +39,7 @@ export class Logger {
         return `\u001B[3${code < 8 ? code : `8;5;${code}`}${decoration}m${value}\u001B[0m`;
     }
 
-    constructor(public name: string, private showDiff = false) {
+    constructor(public name: string) {
         if (name in instances) return instances[name];
         let hash = 0;
         for (let i = 0; i < name.length; i++) {
@@ -59,13 +57,32 @@ export class Logger {
     }
 
     private color(value: any, decoration = '') {
-        return Logger.color(this.code, value, decoration);
+        if (!process.stderr.isTTY) return value;
+        return `\u001B[3${this.code < 8 ? this.code : `8;5;${this.code}`}${decoration}m${value}\u001B[0m`;
     }
 
     private createMethod(name: LogType, prefix: string, minLevel: number) {
         this[name] = (...args: [any, ...any[]]) => {
             if (this.level < minLevel) return false;
-            const msg = `${prefix} ${this.displayName} ${this.format(...args)}`;
+            if (typeof args[0] === 'string' && /^[a-zA-Z]+\.[a-zA-Z]+(\.[a-zA-Z]+)?$/.test(args[0])) {
+                const [type, ...payload] = args;
+                if (global.Hydro.service.db?.started) {
+                    global.Hydro.service.db.collection('log').insertOne({
+                        _id: nanoid(),
+                        _pid: process.pid,
+                        _time: new Date(),
+                        _level: name,
+                        _category: this.name,
+                        _message: type,
+                        ...payload,
+                    });
+                }
+                const msg = `${prefix} ${this.displayName} ${type.translate('en').format({ _inspect: true, payload })}`;
+                if (process.send) process.send({ event: 'message/log', payload: [msg] });
+                else global.Hydro.service.bus.parallel('message/log', msg);
+                return true;
+            }
+            const msg = `${prefix} ${this.displayName} ${this.format(...args)})}`;
             if (process.send) process.send({ event: 'message/log', payload: [msg] });
             else global.Hydro.service.bus.parallel('message/log', msg);
             return true;
@@ -76,8 +93,6 @@ export class Logger {
         return Logger.levels[this.name] ?? Logger.baseLevel;
     }
 
-    extend = (namespace: string, showDiff = this.showDiff) => new Logger(`${this.name}:${namespace}`, showDiff);
-
     format: (format: any, ...param: any[]) => string = (...args) => {
         if (args[0] instanceof Error) args[0] = args[0].stack || args[0].message;
         else if (typeof args[0] !== 'string') args.unshift('%O');
@@ -93,13 +108,6 @@ export class Logger {
             }
             return match;
         }).split('\n').join('\n    ');
-        if (Logger.showDiff || this.showDiff) {
-            const now = Date.now();
-            if (Logger.lastTime) {
-                args.push(this.color(`+${Time.formatTimeShort(now - Logger.lastTime)}`));
-            }
-            Logger.lastTime = now;
-        }
         return format(...args);
     };
 }
diff --git a/packages/hydrooj/src/service/bus.ts b/packages/hydrooj/src/service/bus.ts
index b56b567a6..0ddaff6d7 100644
--- a/packages/hydrooj/src/service/bus.ts
+++ b/packages/hydrooj/src/service/bus.ts
@@ -17,7 +17,7 @@ import type { ProblemSolutionHandler } from '../handler/problem';
 import type { UserRegisterHandler } from '../handler/user';
 
 const _hooks: Record<keyof any, Array<(...args: any[]) => any>> = {};
-const logger = new Logger('bus', true);
+const logger = new Logger('bus');
 const argv = cac().parse();
 
 function isBailed(value: any) {
diff --git a/packages/utils/lib/utils.ts b/packages/utils/lib/utils.ts
index 2ca233820..1c93ab476 100644
--- a/packages/utils/lib/utils.ts
+++ b/packages/utils/lib/utils.ts
@@ -5,6 +5,7 @@ import { Duplex } from 'stream';
 import { ObjectID } from 'mongodb';
 import { isMoment } from 'moment';
 import type { Moment } from 'moment-timezone';
+import { inspect } from 'util';
 
 declare global {
     interface StringConstructor {
@@ -41,12 +42,16 @@ String.random = function random(digit = 32, dict = defaultDict) {
 
 String.prototype.format = function formatStr(...args) {
     let result = this;
-    if (args.length > 0) {
-        if (args.length === 1 && typeof (args[0]) === 'object') {
-            for (const key in args) {
-                if (args[key] !== undefined) {
+    if (args.length) {
+        if (args.length === 1 && typeof args[0] === 'object') {
+            const t = args[0];
+            for (const key in t) {
+                if (!key.startsWith('_') && t[key] !== undefined) {
+                    if (t._inspect && typeof t[key] === 'object') {
+                        t[key] = inspect(t[key], { colors: process?.stderr?.isTTY });
+                    }
                     const reg = new RegExp(`(\\{${key}\\})`, 'g');
-                    result = result.replace(reg, args[key]);
+                    result = result.replace(reg, t[key]);
                 }
             }
         } else return this.formatFromArray(args);